Riveting-machine



(No Model.) 2 Sheets-Sheet 1.

- J. R. CONNOR.v

RIVBTING MACHINE. I No;. 287,630. Patented 00am I883;

MM BY (N0 Model.) 2 Shets-Sheet 2.

J.R .CONNOR.

RIVETING MACHINE. No. 287,630. 7 Patented Oct. 30-, 188-2).

III/11111114 v WITNESSES INVENTQB.

ATTORNEYS.

N. PEI'ERS. mouxmm her. Wafluinguw. mc.

UNITE STATES PATENT IQFFICE.

JOHN R. 'OONNOR, or FRANKLIN, PENNSYLVANIA.

RIVEVTING-MACHINE.

SPECIFICATION-forming part of Letters Patent No. 287,630, dated October30, 1883.

' Application filed February 10, 1883. No model.)

. chines, of which the following is a full,-clear,

and exact description, reference being had to,

the annexed drawings, forming a part of this specification.

This invention relates to machines for inserting and heading rivets insheet-metal by a continuous and partially automatic operation; and theinvention consists of the novel construction hereinafter described andclaimed.

In the drawings, Figure 1 is a perspective view of my riveting-machine.Fig. 2 is a horizontal section of the rivet-heading arm. Fig. 3 is avertical section through the hammercarrying shaft. Fig.- 4 is a frontview, partly in section, and Figs. 5 and 6 are modifications, 0f therivet-heading arm.

A indicates the base-frame of the machine, having perforations a, bywhich it may be secured to the end of a suitable bench or table. In theends B B of the frame A is centered a shaft, 0, to which the hammer D issecured by collar or holder, E, and a set-screw, F. This shaft is alsoprovided with a drum, G, and retracting-springs H, for winding the strapI on the drum and lifting the hammer. The strap, which is to pass downthrough an opening in the table, is to be provided witha stirrup,whereby foot-power may be applied to the hammer. I design, also, toadapt the machine to be run by motor-power.

At. the front of .the base-frame A is an anvil, J, in the upper surfaceof which one or more recessess, K, are to be formed for holding therivets during the Operation of insertthe anvil, and. arranged slightlyabove the same, is the rivet-heading arm L. This arm consists of thesliding bar M, supported in the sleeve N on the end of the oscillatoryrod 0, whichrests in the bracket]? on the front of the frame A, at oneside of the anvil. The

sliding bar M is provided with a coil-spring,

Q, against the tension of which it is to be moved longitudinally by alever, B, which is pivoted to the upper surface of the frame A,

and is adapted to be oscillated by steam, S, on

the shaft 0. The object of the longitudinal movement of the bar M willbe hereinafter explained. The extreme end of the bar M is provided witha perforation,T, which is to register with one of the recesses K whenthe rivet is placed in the latter preparatory to being inserted'into thesheetof metal. A blow of the hammer on the bar M causes the latter todescend on the anvil by an oscillation of the rod 0 against the tensionof a coil-spring, U, and the upper end of the rivet, as it penetratesthe metal, is received intothe perforation T. As the hammer islifted forthe second blow, by which the upper end of the rivet is is pivoted to asleeve, W, secured to the shaft G, communicates a quarterof a revolutionto the cam S by means of the ratchet Y on the cam, and the camoscillates the lever B, so that the bar M, with which the lever engages,is

moved longitudinally toward the anvil until a recess, Z, in the'undersurface of the bar is made to register with the upper end of the rivet.Then, as the hammer descends the sec- .ond time, a head is formed on theupper end of the rivet by means of the recess Z. It will thus be seenthat the longitudinal movement of the bar M enables the rivet tobeinserted and headed by two successive blows of the hammer withoutseparate adjustments of the parts for each step in the process. I

In order that the normal position of the bar M above the anvil may beadjusted to suit rivets of difierent lengths, the oscillatory rod 0,which carries the bar M, is provided with a wrench or rigid arm, A,which is adaptedto .be held against the tension of the springUby a screwbearing against the under surface of theframe A, and a nut on the screwfor regulating the adjustment of the arm A. To prevent the bar M fromturning in the sleeve N, a guide-pin or feather, B, is arranged insuitable projections on the sleeve and bar, respectively. O is a rest toprevent the vertical oscillation of the lever B when it passes out ofengagement with the cam S The cam S is loosely mounted on the shaft 0,-and receives I an intermittent movement in a single direction as thehammer repeatedly rises and falls. D is a retaining-pawl for theratchet.

Fig. 5 is a modification of the end of the sliding bar M, showing twofingers, E, instead of one. The object of this construction is to adaptthe bar for inserting two rivets at a single operation, as i i rivetingon the handle of a cup. The hammer is to fall upon the bar at thejuncture of the two fingers. Fig. 6 is also a modification of the bar M,showing an upward curve, F, to adapt the same for use in riveting on thespouts of coffee-pots.

lVhat I claim is 1. The combination of the hammer, the shaft carryingthe hammer and provided with a cam, the rivet-heading arm, and the leverarranged in engagement with the cam and arm, substantially as shown anddescribed.

2. The combination of the hammer, thehammercarrying shaft having apawl-and-ratchet operated cam, and means for oscillating said shaft, therivct-heading arm adapted to have both a longitudinal and a verticallyoscillating movement, and the lever for communicating a longitudinalmovement to the arm from the said cam, substantially as shown anddescribed.

3. The combination, with the hammer and the anvil, of the rivet-headingarm consisting of the spring-tensione'd sliding bar having a perforationin its end and a heading recess in its under surface, and thespring-tensioned os-' cillatory rod carrying the said sliding bar, andmeans for commnnicatin g alongitudinal movement to the sliding bar, inthe manner and for the purpose set forth.

4. The combination, with the rivet-heading arm adapted to havealongitudinal and avertically oscillating movement, of an adjustingdevice, substantially as shown and described, for holding therivet-heading arm ormally at any desired distance above the anvil, forthe purpose specified.

5. The combination, with the anvil and rivetheading arm, of the centeredshaft adapted to be operated by a strap against the tension of a spring,the hammer adjustably secured to the shaft, the loose cam and ratchetoperated by a pawl on the shaft, and the lever connecting the cam withthe rivet-heading arm, substantially as shown and described.

The above specification of my invention signed by me this 9th day ofFebruary, 1883.

J. It. CONNOR.

Vitnesses:

A. G. LYNE, SOLON C. KianoN.

